如何使用PHP Curl检索PayPal JSON交易详细信息

Question

我有一个名为PayPal Express的类，它正在处理API URL请求，以检索结果，如ClientID、Secret和PayPal Base URL。该类已设置为config.php

define('PRO_PayPal', 0);
// Configuration for Live Paypal Transactions
if(PRO_PayPal){
define("PayPal_CLIENT_ID", "#########################");
define("PayPal_SECRET", "###################");
define("PayPal_BASE_URL", "https://api.paypal.com/v1/");
}
// configurations for sandbox Transactions
else{
define("PayPal_CLIENT_ID", "ATDV3X3ftdxIDC97H99-XgtTca7cpMsyPDtOrxuGKSMYzphNivsu8YFFWTVkRK5CnXbr93BY9liDNAeY");
define("PayPal_SECRET", "EPFvBgOjceLpCmoCKKrsXEFzcR4OtJh4hDimKoobA5Md3qpJGrByUgxh6leUMqzwrxrp_BwR8fXP9Vv3");
define("PayPal_BASE_URL", "https://api-m.sandbox.paypal.com/v1/");
}

PayPal Express Class

require 'Config.php';
class PaypalExpress{ 


public $paypalClientID  = PayPal_CLIENT_ID;
public $paypalSecret   = PayPal_SECRET; 

public function validate($paymentRef, $paymentToken, $payerID, $productID){ 

$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, PayPal_BASE_URL.'oauth2/token'); 
curl_setopt($ch, CURLOPT_HEADER, false); 
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); 
curl_setopt($ch, CURLOPT_POST, true); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch, CURLOPT_USERPWD, $this->paypalClientID.":".$this->paypalSecret); 
curl_setopt($ch, CURLOPT_POSTFIELDS, "grant_type=client_credentials"); 
$response = curl_exec($ch); 
curl_close($ch); 

if(empty($response)) die("Error:No response from paypal");
else{ 
$jsonData = json_decode($response); 
$curl = curl_init(PayPal_BASE_URL.'payments/payment/'.$paymentRef); 
curl_setopt($curl, CURLOPT_POST, false); 
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); 
curl_setopt($curl, CURLOPT_HEADER, false); 
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($curl, CURLOPT_HTTPHEADER, array( 
'Authorization: Bearer ' . $jsonData->access_token, 
'Accept: application/json', 
'Content-Type: application/xml' 
)); 

$response = curl_exec($curl); 
curl_close($curl); 

// Transaction data 
$result = json_decode($response); 

return $result; 
} 

} 
}

我有这个Process.php页面，它从PayPal获得返回的URL数据，它应该插入到数据库中验证的支付详细信息

require 'config.php';
require 'session.php';
require 'class/paypalExpress.php';
require 'class/property.php';
require 'class/payment.php';
try {

if(!empty($_GET['paymentRef']) && !empty($_GET['payerID']) && !empty($_GET['token']) && !empty($_GET['propid']) ){

$paymentRef = $_GET['paymentRef'];
$payerID = $_GET['payerID'];
$token = $_GET['token'];
$propid = $_GET['propid'];
$payment = new payment();
$property = new property();
$paypalExpress = new paypalExpress();
$newId = $property->getProperty($propid);
$Check=$paypalExpress->validate($paymentRef, $propid, $payerID, $token);

if(isset($Check) && $Check->state == 'approved')
{

$id = $Check->id; 
$state = $Check->state; 
$payerFirstName = $Check->payer->payer_info->first_name; 
$payerLastName = $Check->payer->payer_info->last_name; 
$payerName = $payerFirstName.' '.$payerLastName; 
$payerEmail = $Check->payer->payer_info->email; 
$payerID = $Check->payer->payer_info->payer_id; 
$payerCountryCode = $Check->payer->payer_info->country_code; 
$paidAmount = $Check->transactions[0]->amount->details->subtotal; 
$currency = $Check->transactions[0]->amount->currency;

if($newId->Price == $paidAmount && $newId->Currency == $currency)
{
$newpayment = $payment->updatePayments($propid,$paymentRef,$payerID,$token);
// redirecting information to reciept page                      
header("Location:Reciept.php?pyfname=$payerFirstName&pylname=$payerLastName&pymail=$payerEmail"); 
}
}

}
else{
header('Location:index.php'); // redirecting users if there is no transaction details on the url
}
} catch (PDOException $th) {
echo "Error : " .$th->getMessage();
}

现在，当交易完成后，Paypal将交易详细信息重定向到Process.php，而不是插入支付详细信息时，我只是在URL上看到一个空白页面，其中包含Paypal的交易详细信息。代码上有我遗漏的东西吗？

Answer 1

感谢您的代码！几个星期以来，我一直在想如何完成贝宝服务器端的集成！如果您将paypal凭据从configuration.php移动到paypalExpress.php，您的代码就会工作

<?php //confiuration.php
define('PRO_PayPal', 0);
// define("PayPal_CLIENT_ID", "#########################");
//  define("PayPal_SECRET", "'###################");
define("PayPal_BASE_URL", "https://api-m.paypal.com/v1/");
//////////////////////////////////////////////////////////
<?php //paypalExpress.php
require 'configuration.php';
class PaypalExpress{ 
//public $paypalClientID  = '#########################'; // SANDBOX
// public $paypalSecret   = '#########################'; // SANDBOX
public $paypalClientID  = '#########################'; // LIVE
public $paypalSecret   = '#########################';  // LIVE

public function validate($paymentRef, $paymentToken, $payerID, $productID){ 

$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, PayPal_BASE_URL.'oauth2/token'); 
curl_setopt($ch, CURLOPT_HEADER, false); 
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); 
curl_setopt($ch, CURLOPT_POST, true); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch, CURLOPT_USERPWD, $this->paypalClientID.":".$this->paypalSecret); 
curl_setopt($ch, CURLOPT_POSTFIELDS, "grant_type=client_credentials"); 
curl_setopt($ch, CURLOPT_FAILONERROR,true);
$response = curl_exec($ch); 
curl_close($ch); 

/*
// Configuration for Live Paypal Transactions
if(PRO_PayPal){
define("PayPal_CLIENT_ID", "#########################");
define("PayPal_SECRET", "###################");
define("PayPal_BASE_URL", "https://api.paypal.com/v1/");
}
// configurations for sandbox Transactions
else{
define
("PayPal_CLIENT_ID","ATDV3X3ftdxIDC97H99- 
XgtTca7cpMsyPDtOrxuGKSMYzphNivsu8YFFWTVkRK5CnXbr93BY9liDNAeY");
define       
("PayPal_SECRET","EPFvBgOjceLpCmoCKKrsXEFzcR4OtJh4
hDimKoobA5Md3qpJGrByUgxh6leUMqzwrxrp_BwR8fXP9Vv3");
define("PayPal_BASE_URL", "https://api-m.sandbox.paypal.com/v1/");
}
*/
?>